In April 2008, he began publishing a column in the Times, featuring charts as a form of opinion journalism. His column originally appeared biweekly on Saturdays. In May 2009 it became a weekly feature, and twice weekly in December 2012. As of May 2014, it appears every Monday and Thursday. Increasingly it is an essay in text with no chart. Blow also wrote a blog entitled "By The Numbers" for the newspaper's website which was rarely updated and essentially discontinued in 2011.[2]

Blow is a single father of three children. His eldest son attends Yale University[3] and his twins are in high school. They live in Brooklyn, NY.[4] In 2014 Blow came out publicly as bisexual.[5][6]